Triple-eccentric elastic bidirectional pressure butterfly valve sealing structure

Abstract

The utility model discloses a tri-eccentric elastic bidirectional pressure butterfly valve sealing structure which comprises a shell, flange plates are integrally formed on the two sides of the shell, a sealing mechanism is installed in the shell and comprises a driving assembly and a valve element assembly, the valve element assembly is movably connected into the shell, the driving assembly is installed outside the shell, and the valve element assembly is movably connected into the shell. According to the butterfly valve, the valve element assembly is arranged, one end of the sealing piece is embedded in the valve element, meanwhile, one side of the sealing piece wraps the circumference of the valve element, the pressing ring abuts against one side of the sealing piece and is fixed through the first bolt, and through the unique structural design, the sealing reliability of the butterfly valve can be improved, the service life of the butterfly valve can be prolonged, and the maintenance cost can be reduced; and mounting and dismounting are carried out through the first bolts, so that workers can carry out operation conveniently, and the production efficiency of a factory is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of triple eccentric butterfly valve technology, and in particular to a sealing structure for a triple eccentric elastic bidirectional pressure butterfly valve. Background Technology

[0002] Butterfly valves, as valves that open or close the medium in pipelines and equipment, play an important role in regulating and shutting off flow in pipelines and equipment, and are widely used in the fields of petroleum, natural gas, and chemical industry.

[0003] The existing patent document with publication number CN220185855U discloses a triple eccentric butterfly valve with good sealing performance, including a triple eccentric butterfly valve and a valve stem. The valve stem is installed in the middle of the triple eccentric butterfly valve, and the bottom of the valve stem is fixedly connected to the valve plate. The outer right end of the triple eccentric butterfly valve is fixedly connected to the flange by bolts. The inner wall of the flange is fixedly connected to the pipeline. A sealing and protective structure is provided in the middle of the right end of the triple eccentric butterfly valve.

[0004] Although the aforementioned triple eccentric butterfly valve with good sealing performance can solve the corresponding technical problems, its manufacturing process is relatively complex, which increases the operating procedures for workers and is not conducive to rapid production in the factory.

[0005] To address this, a triple-eccentric resilient bidirectional pressure butterfly valve sealing structure is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a sealing structure for a triple-eccentric resilient bidirectional pressure butterfly valve, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A sealing structure for a triple-eccentric resilient bidirectional pressure butterfly valve includes:

[0009] The housing has flanges integrally formed on both sides, and a sealing mechanism is installed inside the housing. The sealing mechanism includes a drive assembly and a valve core assembly. The valve core assembly is movably connected inside the housing, and the drive assembly is installed outside the housing.

[0010] As a preferred technical solution, the drive assembly includes a motor, which is fixedly mounted on the outer surface of the housing. A shaft is fixedly connected to the end of the motor's rotating shaft, and the shaft passes through the housing and is fixedly connected to a fixing block.

[0011] As a preferred technical solution, the shaft is inserted into the middle of the fixing block, and multiple through holes are respectively opened at the ends of the fixing block and the shaft. A bolt is installed at one end of the fixing block, the bolt passes through the through hole on the shaft and is screwed onto the fixing block, and one end of the fixing block is fixedly connected to the valve core assembly.

[0012] As a preferred technical solution, the valve core assembly includes a valve core, one end of which is integrally formed with the fixing block. A groove is provided at one end of the valve core, and a sealing element is snapped into the groove. One end of the sealing element is wrapped around the circumference of the valve core, and a pressure ring is provided at one end of the sealing element. Mounting holes are provided on the pressure ring, the sealing element, and the valve core. A bolt is installed in the mounting hole, and the bottom of the bolt is screwed onto the valve core.

[0013] As a preferred technical solution, the sealing element is made of EPDM rubber.

[0014] As a preferred technical solution, a flow guide cover is provided on one side of the valve core.

[0015] This utility model has at least the following beneficial effects:

[0016] The beneficial effects of this utility model are that, by setting a valve core assembly, one end of the sealing element is fitted onto the valve core, while one side of the sealing element wraps around the circumference of the valve core. By abutting the pressure ring against one side of the sealing element and fixing it with a bolt, the unique structural design can improve the sealing reliability of the butterfly valve, extend its service life, and reduce maintenance costs. The installation and disassembly are carried out by a bolt, which greatly facilitates the operation of the staff and greatly improves the production efficiency of the factory. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the sealing structure of the triple-eccentric elastic bidirectional pressure butterfly valve of this utility model;

[0018] Figure 2 This is a sectional schematic diagram of the sealing structure of the triple-eccentric elastic bidirectional pressure butterfly valve of this utility model;

[0019] Figure 3 This is a schematic diagram of the valve core assembly of the sealing structure of the triple-eccentric elastic bidirectional pressure butterfly valve of this utility model;

[0020] Figure 4 This is a schematic diagram of the drive assembly for the sealing structure of the triple-eccentric elastic bidirectional pressure butterfly valve of this utility model.

[0021] In the diagram: 1. Housing; 2. Sealing mechanism; 201. Motor; 202. Valve core; 203. Groove; 204. Seal; 205. Pressure ring; 206. Bolt 1; 207. Mounting hole; 208. Flow guide cover; 209. Shaft; 210. Fixing block; 211. Bolt 2; 3. Valve core assembly. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 The present invention provides a sealing structure for a triple eccentric resilient bidirectional pressure butterfly valve, comprising: a housing 1, flanges integrally formed on both sides of the housing 1, and a sealing mechanism 2 installed inside the housing 1, wherein the sealing mechanism 2 includes a drive assembly and a valve core assembly 3, the valve core assembly 3 being movably connected inside the housing 1, and the drive assembly being installed outside the housing 1.

[0024] The drive assembly includes a motor 201, which is fixedly mounted on the outer surface of the housing 1. A shaft 209 is fixedly connected to the end of the rotating shaft of the motor 201, and the shaft 209 passes through the housing 1 and is fixedly connected to a fixing block 210. By setting up the drive assembly, the shaft 209 is inserted into the fixing block 210 and fixedly connected to the motor 201, which facilitates assembly by workers and greatly simplifies the installation process of the motor 201.

[0025] The shaft 209 is inserted into the middle of the fixing block 210. Multiple through holes are respectively opened at the ends of the fixing block 210 and the shaft 209. A bolt 211 is installed at one end of the fixing block 210, passing through the through hole in the shaft 209 and screwed onto the fixing block 210. One end of the fixing block 210 is fixedly connected to the valve core assembly 3. By opening multiple through holes in the fixing block 210 and the shaft 209 and fixing them together with bolt 211, installation is convenient and the work efficiency during assembly is greatly improved.

[0026] The valve core assembly 3 includes a valve core 202. One end of the valve core 202 is integrally formed with the fixing block 210. A groove 203 is provided at one end of the valve core 202. A sealing element 204 is snapped into the groove 203. One end of the sealing element 204 is wrapped around the circumference of the valve core 202. A pressure ring 205 is provided at one end of the sealing element 204. Mounting holes 207 are provided on the pressure ring 205, the sealing element 204 and the valve core 202. A bolt 206 is installed in the mounting hole 207. The bottom of the bolt 206 is screwed onto the valve core 202. By fitting one end of the seal 204 onto the valve core 202, and simultaneously wrapping one side of the seal 204 around the circumference of the valve core 202, and by abutting the pressure ring 205 against one side of the seal 204 and fixing it with bolt 206, this unique structural design improves the sealing reliability of the butterfly valve, extends its service life, and reduces maintenance costs. The installation and disassembly via bolt 206 greatly facilitates operation by staff and significantly improves factory production efficiency.

[0027] The sealing element 204 is made of EPDM rubber. It possesses excellent weather resistance, ozone resistance, and chemical corrosion resistance, enabling it to adapt to various harsh environments. Its good elasticity and anti-aging properties allow the elastic sealing ring to stably deform under bidirectional pressure, conforming to the valve seat sealing surface and ensuring a long-term reliable sealing effect.

[0028] A flow guide cover 208 is provided on one side of the valve core 202. By providing the flow guide cover 208, the connection between the drive assembly and the valve core assembly 3 can be protected, and the flow guide cover 208 can reduce resistance and allow water to flow better.

[0029] The working principle of this utility model is as follows: During assembly, the sealing element 204 is fitted into the groove 203 at one end of the valve core 202. The mounting hole 207 on the pressure ring 205 corresponds to the mounting hole 207 on the sealing element 204 and the valve core 202. It is fixed with bolt 206. The valve core assembly 3 is placed in the housing 1. At the same time, the shaft 209 on the drive assembly passes through the housing 1 and is inserted into the insertion hole at one end of the fixing block 210. It is fixed with bolt 211. The guide cover 208 is installed on one side of the valve core assembly 3 to protect the connection between the drive assembly and the valve core assembly 3. The guide cover 208 can reduce resistance and make the water flow better. Thus, the assembly operation of the sealing structure of the triple eccentric elastic bidirectional pressure butterfly valve is completed.

[0030] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure of a triple offset resilient bi-directional butterfly valve, characterized in that, The utility model relates to a sealing mechanism (2) is installed in the inside of shell (1), and the sealing mechanism (2) includes drive assembly and valve core assembly (3), valve core assembly (3) is movably connected in the inside of shell (1), and drive assembly is installed in the outside of shell (1). The drive assembly includes motor (201), the motor (201) is fixedly installed on the outside surface of shell (1), and the rotating shaft end of motor (201) is fixedly connected with shaft rod (209), and the shaft rod (209) penetrates shell (1) and is fixedly connected with fixed block (210), the shaft rod (209) is inserted in the middle part of fixed block (210), a plurality of through holes are formed in the end of fixed block (210) and the end of shaft rod (209) respectively, bolt two (211) is installed on one end of fixed block (210), bolt two (211) penetrates the through hole on the shaft rod (209) and is screwed on fixed block (210), and one end of fixed block (210) is fixedly connected with valve core assembly (3). The valve core assembly (3) includes valve core (202), one end of valve core (202) is integrally formed with fixed block (210), one end of valve core (202) is provided with recess (203), sealing element (204) is clamped in recess (203), one end of sealing element (204) is wrapped on the circumference of valve core (202), one end of sealing element (204) is provided with compression ring (205), installation hole (207) is formed in compression ring (205), sealing element (204) and valve core (202), bolt one (206) is installed in installation hole (207), and the bottom of bolt one (206) is screwed on valve core (202).

2. The seal structure of a three-excentric elastic bidirectional pressure butterfly valve according to claim 1, characterized in that: The sealing element (204) is made of ethylene propylene rubber.

3. The seal structure of a three-excentric elastic bidirectional pressure butterfly valve according to claim 2, characterized in that: One side of the valve core (202) is provided with a flow guide cover (208).

4. The seal structure of a three-excentric elastic bidirectional pressure butterfly valve according to claim 2, characterized in that: ​

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